Yes, they are ubiquitous, but I guess my point is that if you market a product for a specific use-case that sellers don't want to associate with then you will p

Yes, they are ubiquitous, but I guess my point is that if you market a product for a specific use-case that sellers don't want to associate with then you will probably get that your listing removed (i.e. if I have a hammer and advertise it for DIY I will be fine for Amazon, but if I sell that same hammer but call it "Murder Hammer - Best Hammer For Personal Protection!" I will have that product removed even if hammers are ubiquitous and in every toolbox. Same item different product). As Flipper Zero is marketed as a 'hacking tool', discusses use-cases as cloning cards and acting as a 'bad USB' device, has a indie go-go page that implies that you could use it to break into car parks, I'm not entirely surprised that Amazon wouldn't want to stock it. This doesn't mean I don't think it's a great product - I want one and I'm glad it exists. I'm just also not entirely sure I would want to sell it if I was a global retailer.